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TI-2025-38065 Aliases CVE-2025-61622GHSA-538v-3wq9-4h3r

Apache Fory, Apache Fory: Python RCE via unguarded pickle fallback serializer in pyfory

Priority HIGH 73CWE-502Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA and GitHub. Impact type from CWE-502.

Summary

Deserialization of untrusted data in python in pyfory versions 0.12.0 through 0.12.2, or the legacy pyfury versions from 0.1.0 through 0.10.3: allows arbitrary code execution. An application is vulnerable if it reads pyfory serialized data from untrusted sources. An attacker can craft a data stream that selects pickle-fallback serializer during deserialization, leading to the execution of `pickle.loads`, which is vulnerable to remote code execution. Users are recommended to upgrade to pyfory version 0.12.3 or later, which has removed pickle fallback serializer and thus fixes this issue.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.47777 98th percentileScored 2026-11-07
Fix Fixed pyfory (PyPI): 0.12.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
ApacheApache Fory0.12.0 – 0.12.2—No fix listedCNA
ApacheApache Fory0.1.0 – 0.10.3—No fix listedCNA
—pyfory (PyPI)0.12.0 to before 0.12.30.12.3Patch availableGHSA-538v-3wq9-4h3r
—pyfury (PyPI)0.1.0 – 0.10.3—No fix listedGHSA-538v-3wq9-4h3r
  • Apache Fory VendorApache Affected 0.12.0 – 0.12.2 Fixed in — No fix listed CNA
  • Apache Fory VendorApache Affected 0.1.0 – 0.10.3 Fixed in — No fix listed CNA
  • pyfory (PyPI) Vendor— Affected 0.12.0 to before 0.12.3 Fixed in 0.12.3 Patch available GHSA-538v-3wq9-4h3r
  • pyfury (PyPI) Vendor— Affected 0.1.0 – 0.10.3 Fixed in — No fix listed GHSA-538v-3wq9-4h3r

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:apache:fory:*:*:*:*:*:*:*:*0.1.0 – 0.10.3; 0.12.0 – 0.12.2VulnerableApache
  • cpe:2.3:a:apache:fory:*:*:*:*:*:*:*:* Versions 0.1.0 – 0.10.3; 0.12.0 – 0.12.2 Vulnerable ·Apache

Remediation

  • Fix · GHSA-538v-3wq9-4h3r pyfory (PyPI) Fixed in 0.12.3 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-61622
  2. 2026-10-03 Alias added: GHSA-538v-3wq9-4h3r

References

Advisory 3

Other 4

  • TI-2026-50130 Apache Fory: Heap type confusion in C++ polymorphic smart-pointer deserialization CVSS 3.1CRITICAL 9.8
  • TI-2026-46171 Apache Fory: Heap type confusion and out-of-bounds read/write in C++ compatible-mode field-skip paths CVSS 3.1CRITICAL 9.8
  • TI-2026-46169 Apache Fory, Apache Fory: Class-registration bypass through an auto-admitted SerializedLambda capturing interface CVSS 3.1CRITICAL 9.8
  • TI-2026-35617 Apache Fory: PyFory ReduceSerializer Incomplete Policy Enforcement CVSS 3.1CRITICAL 9.8
  • TI-2026-50132 Apache Fory: Out-of-bounds heap read in C++ struct deserializer tagged-int fast-path CVSS 3.1CRITICAL 9.1
  • TI-2026-36874 Apache Fory: Java ReplaceResolverSerializer deserialization checks bypass CVSS 3.1CRITICAL 9.1
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences